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arXiv · 1406.4979

Quantum Test of the Universality of Free Fall

Dennis Schlippert·Jonas Hartwig·Henning Albers·Logan L. Richardson·Christian Schubert·Albert Roura·Wolfgang P. Schleich·Wolfgang Ertmer·Ernst M. Rasel
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Abstract

We simultaneously measure the gravitationally-induced phase shift in two Raman-type matter-wave interferometers operated with laser-cooled ensembles of $^{87}$Rb and $^{39}$K atoms. Our measurement yields an Eötvös ratio of $η_{\text{Rb,K}}=(0.3\pm 5.4)\times 10^{-7}$. We briefly estimate possible bias effects and present strategies for future improvements.

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Dennis Schlippert, Jonas Hartwig, Henning Albers, Logan L. Richardson, Christian Schubert, Albert Roura, Wolfgang P. Schleich, Wolfgang Ertmer, Ernst M. Rasel. 2014-06-19. Quantum Test of the Universality of Free Fall. https://doi.org/10.1103/physrevlett.112.203002

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